Obtain Offset Coefficients - VTI Instruments EX1401 User Manual

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O O
BTAIN FFSET COEFFICIENTS
This procedure is performed to evaluate the offset error on each channel path. In order to perform
this step, you will need to build a special custom cable assembly that connects the thermocouple
simulator to 16 uncompensated thermocouple plugs, as shown in Error! Reference source not
found.1.
ECTRON 1140A
1. Attach the Calibration cable between the Ectron calibrator and all channels of the EX1401.
In the Soft Front Panel 'Channels' table, enable all channels and configure them to Voltage
2.
function, 10V range and 10 Record Size as shown in Error! Reference source not found.2.
Ensure that Clock is set to 10000 and Sample Rate is set to 9.765625 in the 'Sampling' table,
3.
as shown in Error! Reference source not found.3.
Set Records Per Trigger to 1 in the 'Measurement' table. Set all other fields as shown in Error!
4.
Reference source not found.4.
104
Ectron
F 8-1: G E
IGURE AIN RROR
Red banana plug of TC Simulator cable plugs into '+' on Ectron TC Simulator
a.
Black banana plug of TC Simulator cable plugs into '-' on Ectron TC Simulator
b.
c. Secure earth ground to the attachment points on the Ectron TC Simulator and
EX1401
F 8-2: U F
IGURE SER ULL
F 8-3: S
IGURE AMPLING
16x
M S
EASUREMENT ETUP
C
ALIBRATION WEB PAGE
W
INDOW
EX1401
EX1401 Calibration